连接到Db2不仅需要db2jcc4.jar，还需要其相应的许可证JAR，通常是db2jcc_license_cisuz.jar或db2jcc_license_cu.jar。要使用的许可证JAR的文件名取决于您将访问的Db2服务器的操作系统：

• db2jcc_license_cu.jar可以访问Linux，UNIX和Windows Db2服务器
• db2jcc_license_cisuz.jar可以访问所有Db2服务器平台，包括z / OS和IBM i

如果可能，请让您的DBA为您提供db2jcc4.jar的正确发行版以及适合您的Db2环境的许可JAR。否则，您可以从https://www.ibm.com/support/pages/download-db2-fix-packs-version-db2-linux-unix-and-windows从IBM免费下载用于JDBC和SQLJ的IBM数据服务器驱动程序。就许可证JAR而言，该网站上可用的JCC驱动程序只能包括db2jcc_license_cu.jar，而不能包括db2jcc_license_cisuz.jar。

db2jcc JAR（驱动程序和许可证）都需要在程序使用的任何类路径变量中列出。对于sqoop，环境变量为using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace Simplified_Ms.Paint { public partial class Form1 : Form { Graphics g; int x = -1; int y = -1; bool moving = false; Pen pen; public Form1() { InitializeComponent(); g = panel1.CreateGraphics(); pen = new Pen(Color.Black,5); g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; pen.StartCap = pen.EndCap = System.Drawing.Drawing2D.LineCap.Round; } private void panel2_Click(object sender,EventArgs e) { } private void panel1_MouseDown(object sender,MouseEventArgs e) { moving = true; x = e.X; y = e.Y; panel1.Cursor = Cursors.Cross; } private void panel1_MouseMove(object sender,MouseEventArgs e) { if (moving && x != -1 && y != -1) { g.DrawLine(pen,new Point(x,y),e.Location); x = e.X; y = e.Y; } } private void panel1_MouseUp(object sender,MouseEventArgs e) { moving = false; x = -1; y = -1; panel1.Cursor = Cursors.Default; } private void pictureBox1_Click(object sender,EventArgs e) { PictureBox p = (PictureBox)sender; pen.Color = p.BackColor; moving = true; } private void pictureBox2_Click(object sender,EventArgs e) { PictureBox p = (PictureBox)sender; pen.Color = p.BackColor; moving = true; } private void pictureBox3_Click(object sender,EventArgs e) { PictureBox p = (PictureBox)sender; pen.Color = p.BackColor; moving = true; } private void pictureBox4_Click(object sender,EventArgs e) { PictureBox p = (PictureBox)sender; pen.Color = p.BackColor; moving = true; } private void pictureBox5_Click(object sender,EventArgs e) { PictureBox p = (PictureBox)sender; pen.Color = p.BackColor; moving = true; } } }``` ，并且在运行sqoop时可能还需要指定HADOOP_CLASSPATH选项。

--libjars